@Generated(value="software.amazon.awssdk:codegen") public class DescribeEventSubscriptionsPublisher extends Object implements SdkPublisher<DescribeEventSubscriptionsResponse>
Represents the output for the
DatabaseMigrationAsyncClient.describeEventSubscriptionsPaginator(software.amazon.awssdk.services.databasemigration.model.DescribeEventSubscriptionsRequest)
operation which is a paginated operation. This class is a type of Publisher
which can be
used to provide a sequence of
DescribeEventSubscriptionsResponse
response pages as
per demand from the subscriber.
When the operation is called, an instance of this class is returned. At this point, no service calls are made yet and
so there is no guarantee that the request is valid. If there are errors in your request, you will see the failures
only after you start streaming the data. The subscribe method should be called as a request to start streaming data.
For more info, see Publisher.subscribe(org.reactivestreams.Subscriber)
. Each call to the
subscribe method will result in a new Subscription
i.e., a new contract to stream data
from the starting request.
The following are few ways to use the response class:
1) Using the forEach helper method
software.amazon.awssdk.services.databasemigration.paginators.DescribeEventSubscriptionsPublisher publisher = client.describeEventSubscriptionsPaginator(request);
CompletableFuture<Void> future = publisher.forEach(res -> { // Do something with the response });
future.get();
2) Using a custom subscriber
software.amazon.awssdk.services.databasemigration.paginators.DescribeEventSubscriptionsPublisher publisher = client.describeEventSubscriptionsPaginator(request);
publisher.subscribe(new Subscriber<software.amazon.awssdk.services.databasemigration.model.DescribeEventSubscriptionsResponse>() {
public void onSubscribe(org.reactivestreams.Subscriber subscription) { //... };
public void onNext(software.amazon.awssdk.services.databasemigration.model.DescribeEventSubscriptionsResponse response) { //... };
});
As the response is a publisher, it can work well with third party reactive streams implementations like RxJava2.
Note: If you prefer to have control on service calls, use the
#describeEventSubscriptions(software.amazon.awssdk.services.databasemigration.model.DescribeEventSubscriptionsRequest)
operation.
Constructor and Description |
---|
DescribeEventSubscriptionsPublisher(DatabaseMigrationAsyncClient client,
DescribeEventSubscriptionsRequest firstRequest) |
Modifier and Type | Method and Description |
---|---|
DescribeEventSubscriptionsPublisher |
resume(DescribeEventSubscriptionsResponse lastSuccessfulPage)
A helper method to resume the pages in case of unexpected failures.
|
void |
subscribe(org.reactivestreams.Subscriber<? super DescribeEventSubscriptionsResponse> subscriber) |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
forEach
public DescribeEventSubscriptionsPublisher(DatabaseMigrationAsyncClient client, DescribeEventSubscriptionsRequest firstRequest)
public void subscribe(org.reactivestreams.Subscriber<? super DescribeEventSubscriptionsResponse> subscriber)
subscribe
in interface org.reactivestreams.Publisher<DescribeEventSubscriptionsResponse>
public final DescribeEventSubscriptionsPublisher resume(DescribeEventSubscriptionsResponse lastSuccessfulPage)
A helper method to resume the pages in case of unexpected failures. The method takes the last successful response
page as input and returns an instance of DescribeEventSubscriptionsPublisher
that can be used to retrieve
the consecutive pages that follows the input page.
Copyright © 2017 Amazon Web Services, Inc. All Rights Reserved.